Wheel-scraper.



J. D. CONROY.

WHEEL SCRAPER.

APPLICATION FILED MAY 15, 1917.-

INVENTOR WITNESSES p. 60172 W BY . JOHN D. CONROY, 0F CHOKIO, MINNESOTA.

WHEEL-SCRAPER.

resales.

Specification of Letters Patent.

Patented Jan. a, 19th..

Application filed May 15, 1917. Serial No. 168,753.

To all whom it may concern:

Be it known that 1, JOHN D. CoNRoY, a citizen of the United States,residing at Chokio, in the county of Stevens and State of Minnesota,have invented new and useful Improvements in Wheel-Scrapers, of whichthe following is a specification.

This invention relates to wheel scrapers, and more especially it isapplicable to the wheels of drills.

The purpose of the device is to scrape the mud from the periphery ortire of the wheel, so that the latter will not slip on the earth, andthe object of the invention is to produce a scraper of this characterwhich is springpressed toward and preferably in contact with the rim ofthe wheel although it can be instantly thrown out of contact at anytime, and also one in which the blade is'reversible when it becomesworn.

These 01)]6CtS are carried out by the construction hereinafter morefully described and claimed, and as shown in the drawings wherein:

Figure 1 is a perspective view in outline of the rear end of a Monitordrill or furrow opener with this attachment applied.

Fig. 2 is a side elevation of the attachment removed.

Fig. 8 is a similar elevation of the attachment as adapted for the VanBrunt drill or the Kentucky drill or others of like structure.

In Fig. 1 of the drawings I have used the letter \V to designate a wheeland B a box or hopper. The frame F of the Monitor machine is of tubingas shown, and the structure of my improved attachment is madeaccordingly when applied to this machine. The frame of other types ofmachines is of angle-iron, and the structure of my attachment isslightly changed to adapt it thereto, although the general principle ofeither is the same.

Coming now to the details, the reference numeral 1 designates a shankwhich is tubular in Figs. 1 and 2 and flat in Fig. 3 as indicated at 1,the former being pierced with openings 2 and the latter with slots 2.The rear end of the shank is bent substantially at right-angles to acrank-arm 3 which would be a continuation of the tubular shank or asleeve 3 attached to the rear end of the fiat shank. The scraper itselfis a blade or plate 4: substantially rectangular in contour andpreferably flat, and to its rear side are attached two loops 5constituting bearings and which loosely embrace the crank arm at spacedpoints thereof. Coiled on the crank arm just inside the bearings aresprings 6, each having one end 7 attached to the arm and the other end Spressing the lower edge of the plate normally forward and into activecontact with the periphery of the wheel TV. Each corner, or twodiagonally opposite corners, of the plate are pierced with openings 9 inwhich may be selectively inserted a screw-hook 10 held by nuts 11 set uptight against the opposite faces of the blade. Finally a chain 12 isprovided, one end being attached as at 13 to the box B at an appropriatepoint, and a proper link thereof is engaged with the hook when it isdesired to tilt the blade so that its lower edge will not contact withthe wheel. Obviously it is possible by disengaging this link andreengaging the hook with another link nearer the box, to throw the bladeout of active position or in other words, to remove its lower edge sofar from the wheel that it no longer acts as a scraper. As seen in Fig.1 the tubular shank 1 is slipped into a pipe of the frame F and held byscrews or bolts passing through the frame and through the openings inthe shank. Correspondingly the flat shank 1 shown in Fig. 3 is attachedto the frame of other types of drills or similar machines, by laying theshank alongside the frame and passing bolts through the slots in theshank and through openings in or formed in the frame at an appropriatepoint. When this scraper is not to be used at all, these fastening meansmay be removed and the entire attachment withdrawn. When the scraper isapplied, it may be thrown temporarily out of action as suggested and attimes when it is desired that it shall not work. The use of a device ofthis class is too well known to need any amplification here. Aparticular feature of the invention is the possibility of reversing thescraping blade or plate when its lower edge becomes worn. This is doneby dis" connecting the springs where they are attached to the crank arm,and slipping both bearings and both springs off the extremity of thecrank arm, then reversing the plate end for end, re-assembling theparts, and slipping them back into place again.

. "What is claimed as new is 1. In a wheel scraper, the combination witha support comprising a shank having llllll n i c r. c c v q and carrylnga rlght angular cranl' arm;

of a scraping blade rectangular in contour and having openings at itsobliquely opposite corners, bearings attached to the blade, andrevolubly mounted on said crank-arm, a

spring secured to the latter and pressing the lower end of the bladenormally into contact with the wheel rim, and a chain attached at oneend to the vehicle body and having a hook at its other end adapted toengage the opening in whichever end of the blade is uppermost, wherebysaid blade is rendered reversible.

2. In a wheel scraper, the combination with a support comprising a shankhaving means for attachment to the vehicle frame and carrying aright-angular crank-arm; of a scraping blade, bearingscarried therebyand revolubly mounted on said crank-arm, a spring secured to the latterand pressing the lower end of the blade normally into contact with thewheel-rim, the corners of said blade being pierced with openings, ascrew hook selectively mounted in one of said openings at the upper endof the blade, and a chain attached at one end to the vehicle and havingits links engageable with said hook, for the purpose set forth.

3'. In a drill wheel scraper,-the combination with a tubular shank bentat right angles' into a crank-arm,rboth the shank and the arm beingpierced with openings, fastening means through the openings in the shankwhereby it may be attached to the frame of a drill, anda chain-connectedat one end with the box of the drill; of a rectangular scraping bladelying forward of.

said crank-arm, hearings on its rear face embracing the crank-arm,springs coiled on the latter between said bearings and each having oneend engaging the arm and the other end pressing against the blade tothrow its lower edge into active contact with the drill wheel, and meansat the upper end of the blade selectively engaging the links of saidchain, for the purpose set forth.

In testimony whereof I affix my signature.

JOHN D. CONROY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washinaton. 31C.

